KR20000074838A - apparatus for recording/playing broadcasting signal of TV receiver - Google Patents

Abstract

PURPOSE: An apparatus for storing/reproducing a broadcasting signal of a TV receiver is provided to store and reproduce a desired image and correspondent sound and allow a reproducing image to be edited by a user, if necessary, thereby improving a reliability of the apparatus. CONSTITUTION: The apparatus for storing/reproducing a broadcasting signal of a TV receiver comprises a storing/reproducing image signal processing portion for converting an analog signal into a digital signal and controlling a size of an image to temporarily store or reproduce the image; a storing/reproducing sound signal processing portion for converting the analog signal into the digital signal and temporarily storing or outputting the signal; an image/sound memory portion(40) for storing an image and sound signal temporarily stored in the image and sound processing portion; a controlling portion(41) for controlling the storing/reproducing image signal processing portion, the storing/reproducing sound signal processing portion, an operation of the image/sound memory portion and an input/output of the memory according to a controlling operation by a user; an image processing portion(30) for signal-processing an output from the storing/reproducing image signal processing portion to display the image on the screen; and a sound processing portion(36) for signal-processing an output from the storing/reproducing sound signal processing portion to output the sound through a speaker.

Description

Apparatus for recording / playing broadcasting signal of TV receiver

The present invention relates to a TV receiver, and more particularly, to an apparatus for storing / playing a broadcast signal of a TV receiver.

In general, a TV receiver is a device that outputs a broadcast signal transmitted from a broadcasting station through a display means such as a color picture tube (CPT) and a speaker through video and audio processing, and the configuration thereof is shown through FIG. 1 through an antenna. Y / C separating the Y / U / V signal from the output of the tuner / IF unit 1 and the tuner / IF unit 1 which tunes the received broadcast signal and processes the intermediate frequency to generate a CVBS, that is, a composite video signal. Deflector 2, mixer 3 to mix the output of the Y / C separation unit 2 and the OSD signal, and the output of the mixer 3 to display through the CPT (Color Picture Tube) (5) Image processing unit 4 for signal processing, audio processing unit 6 for amplifying and signal processing so that audio signal output from tuner / IF unit 1 can be output through speaker 7, and tuner / IF unit 1 A synchronization signal separator (8), an ypyrom (9), for separating the synchronization signal from the composite video signal output from Generates an OSD signal for expressing a work command processing result and a menu screen and outputs the OSD signal to the mixer 3 and outputs the image to the image processing unit 4 and the audio processing unit 6 according to the synchronization signal output from the synchronization signal separating unit 8. Control unit 10 for controlling the signal processing operation of the two) to synchronize the output of each other.

Referring to the broadcast signal processing operation of the TV receiver configured as described above are as follows.

First, a broadcast signal of a channel selected by a user from among broadcast signals received through an antenna is processed through a tuner / IF unit 1 under the control of the controller 10, and outputs a CVBS, that is, a composite video signal.

Subsequently, the composite video signal is separated into a YUV signal through the Y / C separation unit 2 and input to the mixer 3, and the audio signal tuned through the tuner / IF unit 1 is input to the audio processing unit 6. do.

The controller 10 generates an OSD for configuring a user's operation command processing result or a menu screen and inputs the OSD to the mixer 3.

Subsequently, the mixer 3 mixes the Y.U.V signal and the OSD signal to be output to the image processing unit 4, and the image processing unit 4 performs a deflection process or the like so as to be displayed on the screen.

On the other hand, the voice processing unit 6 is filtered and amplified so that the audio signal can be output through the speaker (7).

The controller 10 controls the output of the image processor 4 and the audio processor 6 according to the synchronization signal output from the synchronization signal separator 8 to control the image and the image through the CPT 5 and the speaker 7. Make sure the audio output is synchronized with each other.

The TV receiver according to the prior art simply processes the received broadcast signal so that the video and audio output is made, so as not to satisfy the various needs of the user who wants to store the screen to watch and play it at the desired time. There is a problem.

Accordingly, an object of the present invention is to provide a broadcast signal storage / reproducing apparatus of a TV receiver capable of storing, reproducing, or editing a broadcast signal.

1 is a block diagram showing the configuration of a typical TV receiver

Figure 2 is a block diagram showing the configuration of a broadcast signal storage / playback apparatus of a TV receiver according to the present invention

Explanation of symbols for main parts of the drawings

21: Tuner / IF section 22: Y / C separation section

23: first A / D converter 24: first scaler

25: Acquired image memory 26: Memory for image playback

27: second scaler 28: mixer / memory

29: first D / A converter 30: image processor

31: CPT 32: second A / D conversion unit

33: Acquired voice memory 34: Memory for voice playback

35: second D / A converter 36: voice processor

37: Speaker 38: Sync signal separator

39: ypyrom 40: video / audio memory

41: control unit

The present invention converts analog video signals to digital, and stores / plays a video signal processing unit for storing / playing a temporary storage or output by adjusting the size to fit the storage and playback, and a storage / playback for converting analog audio signals to digital and temporarily storing or outputting them. Audio signal processing unit, video signal processing unit and video / audio memory unit for temporarily storing the video signal and audio signal stored in the audio signal processing unit, the video signal processing unit and the storage / playback / storage / playback according to the user's broadcast signal storage or playback command Control unit for controlling the operation and memory input / output of the video signal processor and video / audio memory unit for playback, Image processing unit for signal processing to display the output of the storage / playback image processing unit on the screen, Audio processing unit for storage / playback It is configured to include a sound processor for signal processing to output the output through the speaker The features.

Hereinafter, a preferred embodiment of a broadcast signal storage / playback apparatus of a TV receiver according to the present invention will be described with reference to the accompanying drawings.

2 is a block diagram showing the configuration of a broadcast signal storage / playback apparatus of a TV receiver according to the present invention.

As shown in FIG. 2, the apparatus for storing / playing a broadcast signal of a TV receiver includes a tuner / IF unit for tuning a broadcast signal received through an antenna and processing intermediate frequency to generate a CVBS, that is, a composite video signal. 21), the first A for digitizing the image output from the Y / C separation unit 22, the Y / C separation unit 22 to separate the Y / U / V signal from the output of the tuner / IF unit 21 / D converter 23, the first scaler 24 for adjusting the size of the image digitized by the first A / D converter 23, the acquired image memory (25) for temporarily storing the adjusted image ), A second sizer 27 for adjusting a size of an image stored in the image reproducing memory 26 to a size of an image to be reproduced, and a memory for reproducing the image. Of the mixer / memory 28 and the mixer / memory 28, which mixes and records the output of 26 with an OSD signal or an external input image. The first D / A converter 29 and the output of the first D / A converter 29 for converting a digital video signal into an analog video signal are deflected so as to be displayed through a color picture tube (CPT) 31. And a second A / D converter 32 and a second A / D converter 32 for digitizing the audio signal output from the image processor 30, the tuner / IF unit 21 for signal processing. A second D / A conversion unit for converting digital voices from the acquired voice memory 33 for temporarily storing the voice, the voice reproducing memory 34 for temporarily reproducing the voice, and the voice reproducing memory 34 for the analog voice. (35), the audio processing unit 36 for amplifying and signal processing the output of the second D / A converter 35 through the speaker 37, the composite image output from the tuner / IF unit 21 A temporary signal is stored in the synchronization signal separation unit 38, Y pyrom 39, the acquired image memory 25 and the acquired audio memory 33 that separate the synchronization signal from the signal. Video / audio memory 40 for storing the digital video and audio, and a broadcast signal corresponding to the broadcast signal storage command of the user is inputted through the acquired image memory 25 and the acquired audio memory 33. The video and audio information stored in the video / audio memory 40 and stored in the video / audio memory 40 corresponding to the broadcast signal reproduction command of the user are input, respectively. It is configured to include a control unit 41 for output through the (34).

Referring to the broadcast signal storage / playback process of the present invention configured as described above in detail as follows.

The broadcast signal tuned through the antenna is tuned through the tuner / IF unit 21 and the Y / C separation unit 22 and processed into intermediate frequencies, separated into YUV signals, and digitized by the first A / D converter 23. do.

Subsequently, the image signal digitized by the first A / D converter 23 is adjusted to a predetermined size through the first scaler 24 and stored in the acquired image memory 25 in units of frames, and the user stores / plays the broadcast signal. In response to the command, it is stored in the video / audio memory 40 through the control unit 41 or copied to the video playback memory 26 for real time playback.

Meanwhile, the audio signal output from the tuner / IF unit 21 is digitized through the second A / D converter 32 and stored in the acquired voice memory 33 and is controlled according to the user's broadcast signal storage / playback command. It is periodically stored in the video / audio memory 40 through 41 or copied to the memory 34 for audio playback for real time playback.

In this case, the signal processing for each of the broadcast signal storage / playback and real-time playback methods will be described.

1. Broadcast signal storage

When the user issues a broadcast signal storage command, the controller 41 reads the digital video signal stored in the acquired image memory 25 in units of fields at the corresponding time point and stores the digital video signal in the video / audio memory 40 and simultaneously stores the digital video signal. The audio signal synchronized with the read-out is read from the acquired voice memory 33 and stored in the video / audio memory 40.

In this case, a limited memory can be efficiently used by applying a compression method when storing video / audio.

2. Broadcast signal real time playback (general broadcast mode)

If the user does not input a broadcast signal storage / playback command, that is, in a general broadcast state, the digital video signal overwritten in the unit of the acquired video memory 25 on a field basis is copied to the video playback memory 26.

Subsequently, the digital video signal stored in the image reproducing memory 26 is readjusted to the size desired to be displayed on the screen by the second scaler 27 and then the OSD or external of the controller 41 is controlled by the mixer / memory 28. It is mixed with the image and finally stored.

The first D / A converter 29 converts the analog Y.U.V signal, deflects it through the image processor 30, and then displays the CPT 31.

At the same time, the digital audio signal stored in the acquired voice memory 33 is copied to the voice reproducing memory 34 to be synchronized with the corresponding digital video signal under the control of the controller 41, and the second D / A converter 35 After the analog is converted through the voice processing unit 36 and amplified by the voice processing is output to the speaker 37.

3. Simultaneous storage / playback of broadcast signal

When the user simultaneously commands the storage and playback of the broadcast signal, the digital video signal which is overwritten in the unit of the acquired image memory 25 on a field basis is copied to the image playback memory 26 under the control of the controller 41 and at the same time, It is stored in the voice memory 40.

Subsequently, the digital video signal stored in the image reproducing memory 26 is readjusted to the size desired to be displayed on the screen by the second scaler 27 and then the OSD or external of the controller 41 is controlled by the mixer / memory 28. It is mixed with the image and finally stored.

The first D / A converter 29 converts the analog Y.U.V signal, deflects it through the image processor 30, and then displays the CPT 31.

On the other hand, the digital audio signal stored in the acquisition audio memory 33 is stored in the video / audio memory 40 under the control of the control unit 41 and is copied to the audio playback memory 34 to be synchronized with the corresponding digital video signal. The analog signal is converted into analog through the second D / A converter 35, and then output to the speaker 37 through audio processing such as amplification through the audio processor 36.

4. Play stored broadcast signal

When the user inputs the stored broadcast signal playback command, the controller 41 reads the digital video and audio signals stored in the video / audio memory 40 and transmits them to the video playback memory 26 and the audio playback memory 34, respectively. do.

Subsequently, the digital video signal transmitted to the image reproducing memory 26 is readjusted to the size desired to be displayed on the screen by the second scaler 27 and then the OSD of the controller 41 through the mixer / memory 28 or the like. It is mixed with an external image and finally recorded.

In this case, the user may select a size of an image to be played back through the key input unit.

The first D / A converter 29 converts the analog Y.U.V signal, deflects it through the image processor 30, and then displays the CPT 31.

On the other hand, the controller 41 transmits the digital audio signal stored in the video / audio memory 40 to the memory 34 for sound reproduction so as to be synchronized with the digital video signal.

Subsequently, the digital voice signal transmitted to the memory 34 for voice reproduction is converted into analog through the second D / A converter 35, and then subjected to voice processing such as amplification and filtering through the voice processor 36. Will be printed).

In addition, the present invention can be edited as well as storage / playback of the stored video / audio signal.

That is, when playing the stored video / audio, the image quality improvement algorithm is applied or the sound quality improvement algorithm is applied to output the improved image / audio compared to the original image / audio and the data compression method is applied during storage or the image size is changed through the scaler. The video / audio signal can be edited.

The apparatus for storing / playing a broadcast signal of a TV receiver according to the present invention can store and reproduce a user's desired video and a corresponding voice, and can edit and adjust the size of a playback video as needed to satisfy various needs of the user. There is an effect that can improve the reliability of.

Claims (3)

For a TV receiver, A video signal processing unit for converting analog video signals to digital and temporarily storing or outputting them by resizing them for storage and playback; Voice signal processing unit for storage / playback to convert the analog voice signal to digital and temporarily store or output, A video / audio memory unit for storing the video signal and the audio signal temporarily stored in the video signal processor and the audio signal processor; A controller for controlling the operation and memory input / output of the storage / playback video signal processor, the storage / playback video signal processor, and the video / audio memory unit according to a broadcast signal storage or playback command of a user; An image processing unit for processing a signal to display the output of the storage / reproducing image processing unit on a screen; And a voice processing unit for processing a signal to output the output of the storage / reproducing voice processing unit through a speaker. According to claim 1, The video signal processor for storing / reproducing includes a first A / D converter for converting an analog video signal into digital; A first scaler for adjusting the magnitude of the digital video signal output from the first A / D converter; An acquired image memory configured to overwrite the digital image signal whose size is adjusted through the first scaler in units of fields; Memory for video playback for temporarily storing the digital video signal stored in the acquisition video memory, A second scaler which adjusts the digital image signal stored in the image reproducing memory to a predetermined size for displaying; A mixer / memory for mixing and storing the digital video signal whose size is adjusted through the second scaler and an external video signal or an OSD signal; And a first D / A converter for converting the digital video signal stored in the mixer / memory into analog. According to claim 1, The storage / playback voice signal processor includes a second A / D converter for converting analog voice signals into digital signals; Acquisition voice memory for temporarily storing the digital audio signal output from the second A / D converter, A memory for temporarily reproducing voice for reproducing a digital voice signal stored in an acquired voice memory; And a second D / A converter for converting a digital voice signal stored in the voice reproducing memory into an analog.